command_util.sh

   1 #!/usr/bin/env bash
   2
   3
   4 read_header()
   5 {
   6         local key value i
   7
   8         while read key value; do
   9                 case "$key" in
  10                 ---)
  11                         break
  12                         ;;
  13                 HC:)
  14                         header_comment="$value"
  15                         ;;
  16                 CC:)
  17                         c_file_comment="$value"
  18                         ;;
  19                 OF:)
  20                         output_file="$value"
  21                         array_name=${value%command_list}cmds
  22                         ;;
  23                 SF:)
  24                         source_files="$value"
  25                         ;;
  26                 AT:)
  27                         array_type="$value"
  28                         ;;
  29                 SI:)
  30                         for i in $value; do
  31                                 system_includes="$system_includes
  32 #include <$i.h>"
  33                         done
  34                         ;;
  35                 IN:)
  36                         for i in $value; do
  37                                 includes="$includes
  38 #include \"$i.h\""
  39                         done
  40                         includes="$includes
  41 #include \"$output_file.h\""
  42                         ;;
  43                 SN:)
  44                         section_name="$value"
  45                         ;;
  46                 TM:)
  47                         template_members="$value"
  48                 esac
  49         done
  50         if test -z "$header_comment" -o -z "$c_file_comment" \
  51                         -o -z "$output_file"; then
  52                 echo "header error" 1&>2
  53                 exit 1
  54         fi
  55 }
  56
  57 read_one_command()
  58 {
  59         local line
  60
  61         name_txt=""
  62         desc_txt=""
  63         usage_txt=""
  64         help_txt=""
  65         perms_txt=""
  66         line_handler=0
  67         template=0
  68         template_name=""
  69         template_prototype=""
  70         mkdir -p man/man1
  71         while read key value; do
  72                 case "$key" in
  73                 ---)
  74                         break
  75                         ;;
  76                 N:)
  77                         name_txt="$value"
  78                         ;;
  79                 T:)
  80                         template_name="$value"
  81                         template=1
  82                         ;;
  83                 O:)
  84                         template_prototype="$value"
  85                         template=1
  86                         ;;
  87                 P:)
  88                         perms_txt="$value"
  89                         ;;
  90                 D:)
  91                         desc_txt="$value"
  92                         ;;
  93                 L:)
  94                         line_handler=1
  95                         ;;
  96                 U:)
  97                         usage_txt="$value"
  98                         ;;
  99                 H:)
 100                         help_txt="${value}"
 101                         while read line; do
 102                                 if test "$line" = "---"; then
 103                                         break;
 104                                 fi
 105                                 line=${line#H:}
 106                                 help_txt="$help_txt
 107 ${line# }"
 108                         done
 109                         break
 110                         ;;
 111                 esac
 112         done
 113         if test $template -eq 0; then
 114                 if test -n "$name_txt" -a -n "$desc_txt" -a -n "$usage_txt" \
 115                                 -a -n "$help_txt"; then
 116                         ret=1
 117                         return
 118                 fi
 119         else
 120                 if test -n "$template_name" -a -n "$template_prototype" \
 121                                 -a -n "$name_txt " -a -n "$template_members" \
 122                                 -a -n "$desc_txt" -a -n "$usage_txt" \
 123                                 -a -n "$help_txt"; then
 124                         ret=1
 125                         return
 126                 fi
 127         fi
 128         if test -z "$name_txt" -a -z "$desc_txt" -a -z "$usage_txt" \
 129                         -a -z "$help_txt"; then
 130                 ret=0
 131                 return
 132         fi
 133         ret=-1
 134         #return
 135         echo "!ERROR!"
 136         echo "N: $name_txt"
 137         echo "D: $desc_txt"
 138         echo "S: $usage_txt"
 139         echo "P: $perms_txt"
 140         echo "H: $help_txt"
 141         echo "O: $template_prototype"
 142 }
 143
 144 dump_man()
 145 {
 146         if test $template -eq 0; then
 147                 echo ".SS \"$name_txt\""
 148                 echo "$desc_txt"
 149                 echo
 150                 echo "\\fBUsage: \\fP$usage_txt"
 151         else
 152                 for member in $template_members; do
 153                         local sed_cmd="sed -e s/@member@/$member/g"
 154                         local t_name_txt=$(echo $name_txt | $sed_cmd)
 155                         echo ".SS \"$t_name_txt\""
 156                 done
 157                 echo "$desc_txt" | sed -e "s/@member@/{$(echo $template_members | sed -e 's/ / | /g')}/g"
 158                 echo
 159                 echo "\\fBUsage: \\fP"
 160                 echo
 161                 echo ".nf"
 162                 for member in $template_members; do
 163                         local sed_cmd="sed -e s/@member@/$member/g"
 164                         local t_usage_txt=$(echo $usage_txt | $sed_cmd)
 165                         printf "\t$t_usage_txt\n"
 166                 done
 167                 echo ".fi"
 168         fi
 169         echo
 170         echo "$help_txt" | sed -e 's/^  //'
 171         echo
 172         if test -n "$perms_txt"; then
 173                 echo -n "\\fBpermissions:\\fP "
 174                 if test "$perms_txt" = "0"; then
 175                         echo "(none)"
 176                 else
 177                         echo "$perms_txt"
 178                 fi
 179         fi
 180         echo
 181 }
 182
 183
 184 com_man()
 185 {
 186         echo "[$section_name]"
 187         echo
 188         while : ; do
 189                 read_one_command
 190                 if test $ret -lt 0; then
 191                         exit 1
 192                 fi
 193                 if test $ret -eq 0; then
 194                         break
 195                 fi
 196                 dump_man
 197         done
 198 }
 199
 200 dump_proto()
 201 {
 202         local source_file match=""
 203
 204         echo '/**'
 205         echo " * $desc_txt"
 206         echo ' *'
 207         echo ' * \param fd The file descriptor to send output to.'
 208         if test $line_handler -eq 0; then
 209                 echo ' * \param argc The number of arguments.'
 210                 echo ' * \param argv The argument vector.'
 211         else
 212                 echo ' * \param cmdline The full command line.'
 213         fi
 214         echo ' * '
 215         echo " * Usage: $usage_txt"
 216         echo ' * '
 217         echo "$help_txt" | sed -e 's/^/ * /g'
 218         echo ' */'
 219         if test -n "$prototype"; then
 220                 echo "$prototype"
 221                 echo
 222                 return
 223         fi
 224         for source_file in $source_files; do
 225                 match=$(grep "^\(__noreturn \)*int com_$name_txt(" $source_file | head -n 1 | sed -e 's/$/;/1')
 226                 if test -n "$match"; then
 227                         echo "$match"
 228                         break
 229                 fi
 230         done
 231         echo
 232 }
 233
 234 dump_array_member()
 235 {
 236         echo '{'
 237         echo ".name = \"$name_txt\","
 238         if test $line_handler -eq 0; then
 239                 echo ".handler = com_$name_txt,"
 240         else
 241                 echo ".handler = NULL,"
 242                 echo ".line_handler = com_$name_txt,"
 243         fi
 244         if test -n "$perms_txt"; then
 245                 echo ".perms = $perms_txt,"
 246         fi
 247         echo ".description = \"$desc_txt\","
 248         echo ".usage = \"$usage_txt\","
 249         echo ".help = "
 250         printf "%s\n" "$help_txt" | sed -e 's/^/\"/g' -e 's/$/\\n\"/g'
 251         echo '},'
 252 }
 253
 254
 255 template_loop()
 256 {
 257         local t_name="$name_txt"
 258         local t_perms="$perms_txt"
 259         local t_desc="$desc_txt"
 260         local t_usage="$usage_txt"
 261         local t_help="$help_txt"
 262         local t_source_files="$source_files"
 263         local member
 264         for member in $template_members; do
 265                 local sed_cmd="sed -e s/@member@/$member/g"
 266                 #echo "sed_cmd: $sed_cmd"
 267                 name_txt=$(echo $t_name | $sed_cmd)
 268                 #name_txt="$tname"
 269                 perms_txt=$(echo $t_perms | $sed_cmd)
 270                 desc_txt=$(echo $t_desc | $sed_cmd)
 271                 usage_txt=$(echo $t_usage | $sed_cmd)
 272                 help_txt=$(printf "%s\n" "$t_help" | $sed_cmd)
 273                 prototype=$(echo "$template_prototype" | $sed_cmd)
 274                 $1
 275         done
 276
 277 }
 278
 279 com_c_file()
 280 {
 281         echo "/** \file $output_file.c $c_file_comment */"
 282         echo "$system_includes"
 283         echo "$includes"
 284         echo "struct $array_type $array_name[] = {"
 285         while : ; do
 286                 read_one_command
 287                 if test $ret -lt 0; then
 288                         exit 1
 289                 fi
 290                 if test $ret -eq 0; then
 291                         break
 292                 fi
 293                 if test $template -eq 0; then
 294                         dump_array_member
 295                         continue
 296                 fi
 297                 template_loop dump_array_member
 298         done
 299         echo '{.name = NULL}};'
 300 }
 301
 302 com_header()
 303 {
 304         echo "/** \file $output_file.h $header_comment */"
 305         echo
 306         echo "extern struct $array_type $array_name[];"
 307         while : ; do
 308                 read_one_command
 309                 if test $ret -lt 0; then
 310                         exit 1
 311                 fi
 312                 if test $ret -eq 0; then
 313                         break
 314                 fi
 315                 if test $template -eq 0; then
 316                         dump_proto
 317                         continue
 318                 fi
 319                 template_loop dump_proto
 320         done
 321 }
 322
 323 read_header
 324 arg="$1"
 325 shift
 326 case "$arg" in
 327         "c")
 328                 com_c_file
 329                 ;;
 330         "h")
 331                 com_header
 332                 ;;
 333         "man")
 334                 com_man $*
 335                 ;;
 336 esac